The Atiu swiftlet or Sawtell's Swiftlet (Aerodramus sawtelli) is a species of bird in the swift family, endemic to Atiu in the Cook Islands.
This small, dark swift measures 10 cm (3.9 in) long. It is sooty-brown above, slightly lighter below.[2]
Its natural habitats are the island's fernlands and mixed horticultural areas over which it feeds, and in makatea limestone caves within which it nests.[2] The species is known on Atiu as kopeka.
Unlike all other swiftlets, it echolocates only through single clicks, rather than a mix of single- and double clicks.[3]
^BirdLife International (2020). "Aerodramus sawtelli". IUCN Red List of Threatened Species. 2020: e.T22686581A180897346. doi:10.2305/IUCN.UK.2020-3.RLTS.T22686581A180897346.en. Retrieved 11 November 2021.
^ abCite error: The named reference BirdLife was invoked but never defined (see the help page).
^Brinkløv, Signe M. M.; Jakobsen, Lasse; Miller, Lee A. (2022), "Echolocation in Bats, Odontocetes, Birds, and Insectivores", Exploring Animal Behavior Through Sound: Volume 1, Cham: Springer International Publishing, pp. 419–457, ISBN 978-3-030-97538-8, retrieved 2023-09-09
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those species which have been studied), the Atiuswiftlet, Aerodramus sawtelli, and the black-nest swiftlet, A. maximus, emit only single clicks. The former...
bird to echolocate, but several Aerodramus swiftlets also utilise this technique, with one species, Atiuswiftlet, also using echolocation outside its caves...
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